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(No Modl.)

H. P. HOOD VALVE.

No. 434,598. Patented Aug. 19, 1890.

runs 00., more u UNITED STATES PATENT OFF CE.

HARRISON P. HOOD, OF INDIANAPOLIS, INDIANA.

VALVE.

SPECIFICATION forming part of Letters Patent No. 434,598, dated August19, 1890.

I Application filed September 30, 1889. Serial NoA 825,486- (No model.)

To all whom it may concern:

Be it known that I, HARRISON P. H001), a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented a new and useful Improvement in Valves, of which thefollowing is a specification.

My invention relates to an improvement in the disk-valve for whichLetters Patent of the United States No. 375,872 were issued to meJanuary 3, 1888.

The objects of my present improvement are, first, to so construct thevalve-case that it shall be adapted more particularly to be set in afloor or other surface for use on pipes for distributing fuel-gas inthose situations where it is desirable that the pipes should be beneaththe floor, or otherwise arranged out of sight, while th'e valve isarranged conveniently at hand and in sight, and all its working parts beaccessible without disturbing the pipe-connections or the connection ofthe valve-case with the floor, and, second, to provide a key for turningthe Valve, which shall be connected with the valve-stem in such a manneras to be inoperative when in its normal position, so as to guard againstaccidental turning of the valve, all as hereinafter fully described.

The accompanying drawings illustrate my invention.

Figure 1 represents a central vertical section of one of my valveshaving myimproved key and adapted to be set into a floor and to receivetwo vertical pipe-sections through which the gas enters and leaves thevalve below the surface of the floor. Fig. 2 represents a plan of thevalve-case, the cap and Valve having been removed. Fig. 3 is a plan ofthe under side of the valve-disk. Fig. at represents a longitudinalsection and a crosssection of the key at a.

A is the valve-case, which consists of a short cylinder having oneclosed end, which is provided with two eccentrically-arranged ports Band 0. Case A is provided in the form shown in Fig. 1 with aradially-projecting flange D, formed integral with the case, for thepurpose of securing the case to the floor. In some places where the pipemay be easily supported from below this flange may be omitted. Ports Band O are provided with ment of the cylindrical case A and thepipesockets is such that the extreme diameter of the two socketscombined is within the outline of the cylindrical portion of the case,so that the pi pe-sockets will pass through a hole bored to fit thecase.

The interior periphery of case A is turned true, and is screw-threadedto form a bearing for the valve-disk F, and the periphery of thevalve-disk is correspondingly threaded, so that as the valve is turnedin the direction of closing it also moves longitudinally toward thevalve-seats. The construction in this respect, and also the constructionof the yielding valve-seats, is the same as that shown in Letters PatentNo. 37 5,872, issued to meJanuary 3, 1888.

The under surface of the valve-disk F is turned true and ground so as tofit closely to the valve-seats and cover the ports, and is provided withtwo eccentrically-arranged1ongitudinal openings j j, adapted, when thevalve is properly turned, to register with and communicating with theinterior chamber 7c of the valve-disk.

The Valve-stein L is formed integral with the valve-disk and extends outthrough the cap M, which closes the open end of the valvecase, the jointbeing above the flange D. The cap is provided with a recesso to receivethe stein-packing 10. In many cases it is desired to have the wrenchattached to the valvestem so that it cannot be readily removed, but willat the same time be inoperative in its normal position, so as to preventchildren and others not acquainted with its construction and arrangementfrom turning the valve. For this purpose I construct the key and thevalve-stem as shown in Fig. 1. The portion a of the valve-stem whichprojects above the cap is cylindrical and its outer portion 0 is square.The interior of the barrel of the key P is square in section at r andcylindrical at s, the arrangement being such that when the key stands inits normal position, with its lower end resting on the cap M, the squareportion of the key is opposite the cylindrical portion of the stem andturns freely thereon without turning the valve; but when the key israised until stopped by the washer 15, secured to the top of the stem,the square part of the key is engaged with the squared portion of thevalve-stem, and the valve may then be turned, the key returning to itsnormal positionwhen released. Washer 15 fits easily the cylindricalinterior 3 of the key, and forms a guide which holds the key steadilyupright when in its normal position. In case it is thought desirable,under certain circumstances, to remove the key when the valve is closed,washer 15 may be easily removed. The key can then be taken off and anordinary key applied to the square portion of the stem. The barrel ofthe key may be provided with a hand-wheel y or the ordinary flat wingsfor turning it.

In operation, the valve-disk being in the position shown in thedrawings, openings j j therein register with the ports B and C and thegas or other fluid flows from one port to the other through the interiorof the valve, either port being the inlet and the other the outlet. Byturning the valve-disk a quarterrevolution the blank surfaces u u of thedisk are brought over the ports and the disk is at the same time forcedagainst the valve-seats d ande by the screw-threads on its periphery. Bythis construction a valve for natural gas is formed in which sediment orcarbon cannot accumulate on thevalve-seats or the valveseats becomestrained out of shape.

The peculiar construction of the valve-case adapts it to be set in ahole boredin the floor of the same diameter as the exterior of thecylindrical portion A of the case. The flange D rests on the floor, issecured thereto, conceals the opening therein, and serves to supturbingthe connection of the valve-case with the floor or with the pipes, whichresultsare ;of great advantage inthe use of fuel-gas.

I claim as my invention- 1. In a valve, the combination, with thevalve-disk having two eccen trically-arrangcd longitudinal openings, ofthe above-described valve-case consisting of the cylindrical portion A,forming a bearing for the disk, an inlet-port and an outlet-portarranged ou opposite sides of its axis, pipe-sockets H II, ar-

ranged parallel with each other and concentric with said ports, and theradial flange D, said cylindrical portion havingits flange andpipe-sockets formed integral-therewith, as set forth.

2. In a valve, the combination, with the valve-disk having twoeccentrically-arrangedlongitudinal openings, of the valve-case-consisting of the cylindrical portion A, forming a bearing for the disk, aninlet-port and an outlet-port arranged on opposite sides of its axis,and pipe-sockets H H, arranged parallel with each other and concentricwith said ports, said cylindrical portionhaving its pi pesockets formedintegral therewith, as setfortha HARRISON P. HOOD. Witnesses:

CHAS. SCHURMANN, V. M. HOOD.

